Which is lighter, the Nike Structure 23 or the Structure 24?

The Nike Structure 23, by 0.8 oz in a men's US 9 (10.2 oz vs 11 oz).

Do the Nike Structure 23 and Structure 24 come in the same widths?

Yes. Both run in D, 2E, 4E for men's sizes, so a width that fit in the Structure 23 carries over to the Structure 24.

How do the stack heights compare?

22 mm heel and 14 mm forefoot on the Nike Structure 23, against 22 mm and 14 mm on the Structure 24. Same platform under both.

Is the Structure 24 still the newest Structure?

No. The Structure 25 replaced it in 2023, so the Structure 24 now sells as an older model and usually below its $120 list price.

Nike Structure 23 vs Structure 24

Updated July 30, 2026. Specs are men's US 9.

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Faithful successor

THE SHORT ANSWER

Whichever your size still exists in. The Structure 23 is discontinued at retail, so remaining pairs sell against a thinning size run, while the Structure 24 has a full one.

Structure 23 · 2020

Structure 24 · 2021

Every spec, side by side

Spec	Structure 23	Structure 24
FIT AND WEIGHT
Weight	10.2 oz	11 oz
Widths	D, 2E, 4E	D, 2E, 4E
Upper	Redesigned engineered mesh	Plusher, slightly roomier engineered mesh
	The main change of the whole update.
CUSHIONING GEOMETRY
Heel stack	22 mm	22 mm
Forefoot stack	14 mm	14 mm
Drop	8 mm	8 mm
MATERIALS
Midsole	Soft single-density EVA with a forefoot Zoom Air unit, no medial post	Firm EVA with a forefoot Zoom Air unit, carried over from the 23
VALUE
List price at launch	$120	$120
OTHER CHANGES
Support feel	Subtle geometry-based stability	A touch more prominent
	Small internal tweaks; Doctors of Running called it mild-to-moderate stability in all but name.

Weighing whether to switch at all, rather than which of these two to buy? What replaced the Nike Structure 23 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.

Buy the Structure 23

Sizes running out

Discontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.

Men's: Check remaining stock Women's: Check remaining stock

Availability last checked Jul 30, 2026.

Buy the Structure 24

Sizes running out

Discontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.

Men's: Check remaining stock Women's: Check remaining stock

Availability last checked Jul 30, 2026.

Questions runners ask

Which is lighter, the Nike Structure 23 or the Structure 24?: The Nike Structure 23, by 0.8 oz in a men's US 9 (10.2 oz vs 11 oz).
Do the Nike Structure 23 and Structure 24 come in the same widths?: Yes. Both run in D, 2E, 4E for men's sizes, so a width that fit in the Structure 23 carries over to the Structure 24.
How do the stack heights compare?: 22 mm heel and 14 mm forefoot on the Nike Structure 23, against 22 mm and 14 mm on the Structure 24. Same platform under both.
Is the Structure 24 still the newest Structure?: No. The Structure 25 replaced it in 2023, so the Structure 24 now sells as an older model and usually below its $120 list price.